Spring-clip for concrete reinforcements.



A. H. SYMONS.

SPRING CLIP FOR CONCRETE 'REINFORCEMENTS.

APPLICATION FILED IULY13. 1915' atontcd May 30, 1916.

nmrnn stairs ARTHUR I I SYMONS, OF CHICAGO, ILLINOIS, ASSIGNOR T0 SYIKONS CLAMP 00., 0F

onioaeo,

ILLINOIS, A CORPORATION OF MISSOURI.

SPRING-GLIP FOR CdNCRETE REINFORCEMENTS.

Patented May 30, 1936.

Application filed July 13, 1915. Serial No. 39,577.

To all whom it may concern Be it known that I, ARTHUR H. SYMoNs, a citizen of the United States, residing at lhicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in- Spring-Clips for Concrete Reinforcements, of which the following is a specification.

This invention relates to improvements in spring clips for concrete reinforcements of that general character in which a spring metal filament is so shaped as to embrace and bindtogether by the spring tension of the clip intersecting reinforcing members,

whichare to be embedded in the concrete. r

' Among the salient objects of the invention are to provide a clip which can be very economically manufactured of inexpensive rnaterial; which is extremely efficient in rethe parts to which it concrete reinforcement 8.

liably holding together is applied; which may be applied almost instantly and with the greatest convenience without the use of tools, and which by realson of its form and construction may be op"- plied to reinforcements of different shapes and considerably varying dimensions with out change in the form or proportions of the clip.

Other objects .of the device will appear to those skilled in the art and need not be spe cifically mentioned.

To the above ends the invention consists in the matters hereinafter described, and more particularly pointed out in the appended claim.

In the drawing view of a series of Figure 1 is a perspective crossed and intersecting rod-like reinforcements of concrete held in definitely spaced relation by clips embody ing my invention applied at each intersecting point of the reinforcements; Fig. 2 is another perspective view of one of my improved clips applied to intersection reinforcements but unfastened and therefore in the position which the clip assumes when untensioned and open; Fig. 3 is a view of the parts shown in F ig. 2 with the clip fully applied; 1 g. 4 shows a modification.

The cli s of my invention are of spring metal, and in the manufacture of the same I prefer, for reasons of economy, simplicity of manufacture and economy of material, to form the clips of wire having such resiliency that the clips. when applied will exercise a constant tension to hold the parts firmly and the other reinforcement '7 lies direct bent or sprung clamped together. In practice moderateiy hard drawn steel wire I have found best adapted for this purpose.

In the preferred embodiment of the invention, that which I have shown in the drawings, a suitable length of wire is bent intermediate its length to form two arms 1, 2, an open loop or partial ring 3 joining the two arm portions, a saddle like cross extension 4 at one end, and a hook 5 forming the extremity of the arm which has the saddle portion. The arm 2 may desirably be, and as herein shown is, straight as to its main length. At a point adjacent to the loop portion 3 the arms are provided with parti circular bends of humps 6, 6, which are parallel with each other and are adapted to overlie and partially embrace one of the The proportions of the the clip are such that when one of therein forcements 8 is extended through the loo 3 upon and crosswise of the reinforcement 8, and the humps of the clip and rest upon the upper side of the reinforcement 7, the arms of the clipwill extend atan acute angle relatively to the reinforcement member 8, as shown very clearly in Fig. 2; the angle included between the arms of the clip such that these arms may be forced down so that their lower ends approximately coincide with the lower side of the reinforcement member 8 withoutgr'eutly, orat all, exceedingthe elastic limit of the spring metal of which the clip is formed. The clip having been applied as last described and the reinforcing members adjusted to theexact intersecting rel ation which is to be preserved until they are embedded in concrete, the arm 1 is first forced downwardly and outwardly so as to carry the saddle portion 4:below the level of the member 8, and the saddle is then adjusted to embrace and hook against the under side of the reinforcement, as shown clearly in Fig. 3. The straight-arm is then downwardly and hooked behind and underneath the hook member 5, as also shown clearly in, Fig. 3. The latching together of the arms beneath the longitudinal reinforcement as described binds the two reinforcements together at their point of partially embrace and the reinforcing member being I several parts of,

intersection very firmly. The tension or de ,gree 13 firmness with which they are thus unitef depends chiefly upon the gage and temper of Wire used in the clip. It is tound 111 practice that these Wire clips hold to- ,gether ordinary sized metal reinforcements with ample firmness when made of Wire of about 12 gage and of ordinary hard drawn stock.

Since the holding function of the clip depends upon securing the arms in tensioned position to a part of the reinforcement some distance from the intersecting point, it is obvious that the ends of the arms may be se cured in such relation otherwise than as shown in the first three figures of the drawing. Accordingly I tion in Fig. 4c, in which the arms instead of being hooked together are each provided with its own saddledike portion which enablesthem to'be independently secured to the reinforcement. Other modifications may be made Without departing fromthe spirit of the invention.

' It is to be noted-that the clips can be rehave shown a mo difica moved and re-adjusted, or they might der special circumstances be removed preserved for use again, although ordi i r they are left applied to the reinforceme and embedded in the concrete.

I claim as my invention:

A spring clip for uniting concrete re forcen'ients, comprising a length of sp wire bent intermediate its length to for a partial loop adapted to embrace at reinforcement member extending in "the direction of the length of the clip and two arms extending in continuation of the sides said loop, a hump-like bend formee in each arm of the clip near the loop portion thereof, a transversely disposed saddle portion formed upon one of said arms adapted to underlie and engage a longitudinally dis posed reinforcement, and a downturned end on the arm forming a hook inter-Zeal:- ing with the other arm of the clip.

ARTHUR H. SYMUNS.

lvitnesses ALBERT H. GRAVES, EMILIE Rose. 

